On the Assemble command bar, click the Match Coordinate Systems button on the Relationship Types list.
Do one of the following:
If you are replacing a relationship you deleted from an existing part, select the part to be repositioned.
If you are placing a new part into an assembly, select the coordinate system you want to match with a part in the assembly.
Select a part in the assembly.
On the part in the assembly, select the coordinate system to which the first part is to be aligned.
Press Enter.
Tip:
When you match the coordinate systems of the two parts, three planar align relationships are applied to align the parts with the axes of their coordinate systems.